US334489A - John thomlinson - Google Patents
John thomlinson Download PDFInfo
- Publication number
- US334489A US334489A US334489DA US334489A US 334489 A US334489 A US 334489A US 334489D A US334489D A US 334489DA US 334489 A US334489 A US 334489A
- Authority
- US
- United States
- Prior art keywords
- cement
- thomlinson
- john
- tincal
- powdered
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000004568 cement Substances 0.000 description 22
- 229910052602 gypsum Inorganic materials 0.000 description 12
- 239000010440 gypsum Substances 0.000 description 12
- 229940037003 alum Drugs 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000015450 Tilia cordata Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011872 intimate mixture Substances 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000011508 lime plaster Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/14—Cements containing slag
- C04B7/147—Metallurgical slag
Definitions
- ingredients are mixed togetherdry, and I prefer to conduct the manufacture as follows: I grind the calcined gypsum in the usual manner to a fine powder. I also in like manner and separately grind the tincal. I mix the two powders in the proportion of about forty or fifty pounds of tincal to the ton of calcined gypsum. The proportions may be varied. If the quantity of tincal employed be somewhat greater than is stated above, the cement will be hardened, and if less be used the cement will becomparatively soft. The mixture of the two powders is in their dry state and should be very complete. It should be mentioned that gypsum varies much in quality, and that to attain a uniform standard in respect to hardness varying proportions of tincal will have to be used.
Description
drive off water from it.
UNITED STATES PATENT OFFICE.
JOHN THOMLINSON, OF KNOTHILL WORKS, CARLISLE, ENGLAND.
PLASTER- OR CEMENT.
SPECIFICATION fannin part of Letters Patent No. 834,489, dated January 19, 1886.
Application filed July 27, 1885.
For this purpose I take plaster-stone or sul phate of lime, and by the usual processes I I then add an imported mineral known as tincal, and obtain an intimate mixture of the two in afinelypowdered state. I also incorporate with these materials a proportion ofpowdered alum. The
. ingredients are mixed togetherdry, and I prefer to conduct the manufacture as follows: I grind the calcined gypsum in the usual manner to a fine powder. I also in like manner and separately grind the tincal. I mix the two powders in the proportion of about forty or fifty pounds of tincal to the ton of calcined gypsum. The proportions may be varied. If the quantity of tincal employed be somewhat greater than is stated above, the cement will be hardened, and if less be used the cement will becomparatively soft. The mixture of the two powders is in their dry state and should be very complete. It should be mentioned that gypsum varies much in quality, and that to attain a uniform standard in respect to hardness varying proportions of tincal will have to be used.
Serial No. 172,793. (No specimens.) Patented in England February 9, 1885, No. 1.773.
In some cases I mix other materials as well as tincal with the calcined gypsum. Thus a good cement is obtained from the following materials: finely-powdered calcined gypsum, one ton; finely-powdered tincal, forty-five pounds; finely-powdered alum, dry, fifteen pounds. The cement thus made Icall Robinsons cement. ltis of a similar character to the cements known as Keens, Parian, and Martins cement, and is adapted for use in every way that these cements are used, and for the making of fireproof ceilings and for various other purposes.
The process which I have described is very economical as compared with processes heretofore employed in producing like cements, and Robiusons cement can consequently be delivered in the market at a price which admits of its being employed for purposes for which common lime-plaster is now employed.
Having now particularly described and ascertained the nature of my said invention, and in what manner the same is to be performed, I declare that what I claim is The hereinbeforedescribed cement, consisting of calcined and powdered gypsum and powdered tincal with or without powdered alum, mixed together dry and in about the proportions set forth.
JOHN THOMLINSON.
Witnesses:
THOMAS LAKE,
17 Gracechurchfltreet, London, E. C. W. P. WARREN,
l7 Gracechm'ch Street, London.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US334489A true US334489A (en) | 1886-01-19 |
Family
ID=2403582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US334489D Expired - Lifetime US334489A (en) | John thomlinson |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US334489A (en) |
-
0
- US US334489D patent/US334489A/en not_active Expired - Lifetime
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